diff options
Diffstat (limited to 'net/mac80211/iface.c')
| -rw-r--r-- | net/mac80211/iface.c | 125 |
1 files changed, 118 insertions, 7 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 0793d7a8d74..50deb017fd6 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -10,6 +10,7 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include <linux/slab.h> #include <linux/kernel.h> #include <linux/if_arp.h> #include <linux/netdevice.h> @@ -412,8 +413,7 @@ static int ieee80211_stop(struct net_device *dev) netif_addr_lock_bh(dev); spin_lock_bh(&local->filter_lock); - __dev_addr_unsync(&local->mc_list, &local->mc_count, - &dev->mc_list, &dev->mc_count); + __hw_addr_unsync(&local->mc_list, &dev->mc, dev->addr_len); spin_unlock_bh(&local->filter_lock); netif_addr_unlock_bh(dev); @@ -486,7 +486,7 @@ static int ieee80211_stop(struct net_device *dev) cancel_work_sync(&sdata->u.mgd.work); cancel_work_sync(&sdata->u.mgd.chswitch_work); cancel_work_sync(&sdata->u.mgd.monitor_work); - cancel_work_sync(&sdata->u.mgd.beacon_loss_work); + cancel_work_sync(&sdata->u.mgd.beacon_connection_loss_work); /* * When we get here, the interface is marked down. @@ -596,8 +596,7 @@ static void ieee80211_set_multicast_list(struct net_device *dev) sdata->flags ^= IEEE80211_SDATA_PROMISC; } spin_lock_bh(&local->filter_lock); - __dev_addr_sync(&local->mc_list, &local->mc_count, - &dev->mc_list, &dev->mc_count); + __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); spin_unlock_bh(&local->filter_lock); ieee80211_queue_work(&local->hw, &local->reconfig_filter); } @@ -815,6 +814,118 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, return 0; } +static void ieee80211_assign_perm_addr(struct ieee80211_local *local, + struct net_device *dev, + enum nl80211_iftype type) +{ + struct ieee80211_sub_if_data *sdata; + u64 mask, start, addr, val, inc; + u8 *m; + u8 tmp_addr[ETH_ALEN]; + int i; + + /* default ... something at least */ + memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); + + if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && + local->hw.wiphy->n_addresses <= 1) + return; + + + mutex_lock(&local->iflist_mtx); + + switch (type) { + case NL80211_IFTYPE_MONITOR: + /* doesn't matter */ + break; + case NL80211_IFTYPE_WDS: + case NL80211_IFTYPE_AP_VLAN: + /* match up with an AP interface */ + list_for_each_entry(sdata, &local->interfaces, list) { + if (sdata->vif.type != NL80211_IFTYPE_AP) + continue; + memcpy(dev->perm_addr, sdata->vif.addr, ETH_ALEN); + break; + } + /* keep default if no AP interface present */ + break; + default: + /* assign a new address if possible -- try n_addresses first */ + for (i = 0; i < local->hw.wiphy->n_addresses; i++) { + bool used = false; + + list_for_each_entry(sdata, &local->interfaces, list) { + if (memcmp(local->hw.wiphy->addresses[i].addr, + sdata->vif.addr, ETH_ALEN) == 0) { + used = true; + break; + } + } + + if (!used) { + memcpy(dev->perm_addr, + local->hw.wiphy->addresses[i].addr, + ETH_ALEN); + break; + } + } + + /* try mask if available */ + if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) + break; + + m = local->hw.wiphy->addr_mask; + mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | + ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | + ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); + + if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { + /* not a contiguous mask ... not handled now! */ + printk(KERN_DEBUG "not contiguous\n"); + break; + } + + m = local->hw.wiphy->perm_addr; + start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | + ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | + ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); + + inc = 1ULL<<__ffs64(mask); + val = (start & mask); + addr = (start & ~mask) | (val & mask); + do { + bool used = false; + + tmp_addr[5] = addr >> 0*8; + tmp_addr[4] = addr >> 1*8; + tmp_addr[3] = addr >> 2*8; + tmp_addr[2] = addr >> 3*8; + tmp_addr[1] = addr >> 4*8; + tmp_addr[0] = addr >> 5*8; + + val += inc; + + list_for_each_entry(sdata, &local->interfaces, list) { + if (memcmp(tmp_addr, sdata->vif.addr, + ETH_ALEN) == 0) { + used = true; + break; + } + } + + if (!used) { + memcpy(dev->perm_addr, tmp_addr, ETH_ALEN); + break; + } + addr = (start & ~mask) | (val & mask); + } while (addr != start); + + break; + } + + mutex_unlock(&local->iflist_mtx); +} + int ieee80211_if_add(struct ieee80211_local *local, const char *name, struct net_device **new_dev, enum nl80211_iftype type, struct vif_params *params) @@ -844,8 +955,8 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, if (ret < 0) goto fail; - memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); - memcpy(ndev->perm_addr, ndev->dev_addr, ETH_ALEN); + ieee80211_assign_perm_addr(local, ndev, type); + memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */ |